2y8w: Difference between revisions

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{{STRUCTURE_2y8w|  PDB=2y8w  |  SCENE=  }}
==STRUCTURE OF CRISPR ENDORIBONUCLEASE CSE3 BOUND TO 20 NT RNA==
===STRUCTURE OF CRISPR ENDORIBONUCLEASE CSE3 BOUND TO 20 NT RNA===
<StructureSection load='2y8w' size='340' side='right' caption='[[2y8w]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
{{ABSTRACT_PUBMED_21572442}}
== Structural highlights ==
<table><tr><td colspan='2'>[[2y8w]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Thermus_thermophilus Thermus thermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2Y8W OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2Y8W FirstGlance]. <br>
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1wj9|1wj9]], [[2y8y|2y8y]], [[2y9h|2y9h]]</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2y8w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2y8w OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2y8w RCSB], [http://www.ebi.ac.uk/pdbsum/2y8w PDBsum]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Clustered regularly interspaced short palindromic repeat (CRISPR) chromosomal loci found in prokaryotes provide an adaptive immune system against bacteriophages and plasmids. CRISPR-specific endoRNases produce short RNA molecules (crRNAs) from CRISPR transcripts, which harbor sequences complementary to invasive nucleic acid elements and ensure their selective targeting by CRISPR-associated (Cas) proteins. The extreme sequence divergence of CRISPR-specific endoRNases and their RNA substrates has obscured homology-based comparison of RNA recognition and cleavage mechanisms. Here, we show that Cse3 type CRISPR-specific endoRNases bind a hairpin structure and residues downstream of the cleavage site within the repetitive segment of cognate CRISPR RNA. Cocrystal structures of Cse3-RNA complexes reveal an RNA-induced conformational change in the enzyme active site that aligns the RNA strand for site-specific cleavage. These studies provide insight into a catalytically essential RNA recognition mechanism by a large class of CRISPR-related endoRNases.


==Function==
An RNA-induced conformational change required for CRISPR RNA cleavage by the endoribonuclease Cse3.,Sashital DG, Jinek M, Doudna JA Nat Struct Mol Biol. 2011 Jun;18(6):680-7. Epub 2011 May 15. PMID:21572442<ref>PMID:21572442</ref>
[[http://www.uniprot.org/uniprot/Q53WG9_THET8 Q53WG9_THET8]] CRISPR (clustered regularly interspaced short palindromic repeat), is an adaptive immune system that provides protection against mobile genetic elements (viruses, transposable elements and conjugative plasmids). CRISPR clusters contain sequences complementary to antecedent mobile elements and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). Processes pre-crRNA into individual crRNA units, but may not actually undergo enzyme turnover, retaining the crRNA product. Generates a 2',3'-cyclic phosphodiester.<ref>PMID:21572442</ref> <ref>PMID:21572444</ref>


==About this Structure==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
[[2y8w]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Thermus_thermophilus Thermus thermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2Y8W OCA].
</div>
 
== References ==
==Reference==
<references/>
<ref group="xtra">PMID:021572442</ref><references group="xtra"/><references/>
__TOC__
</StructureSection>
[[Category: Thermus thermophilus]]
[[Category: Thermus thermophilus]]
[[Category: Doudna, J A.]]
[[Category: Doudna, J A]]
[[Category: Jinek, M.]]
[[Category: Jinek, M]]
[[Category: Sashital, D G.]]
[[Category: Sashital, D G]]
[[Category: Ferredoxin-like]]
[[Category: Ferredoxin-like]]
[[Category: Hydrolase-rna complex]]
[[Category: Hydrolase-rna complex]]
Retrieved from "https://proteopedia.org/2y8w"